Zobrazeno 1 - 10
of 201
pro vyhledávání: '"John R Roche"'
Publikováno v:
Reproduction and Fertility, Vol 3, Iss 1, Pp 1-8 (2022)
The efficacy of a long-acting synthetic derivative of kisspeptin (Kp) to initiate normal oestrous cycles was tested in 24 mixed-aged, Holstein-Friesian cows that were 18–25 days postpartum on the day of treatment (D0). Groups of eight cows received
Externí odkaz:
https://doaj.org/article/852f165adc85409d9c34a6a93de713b6
Publikováno v:
PLoS ONE, Vol 5, Iss 8, p e12306 (2010)
BACKGROUND: Plants, due to their immobility, have evolved mechanisms allowing them to adapt to multiple environmental and management conditions. Short-term undesirable conditions (e.g. moisture deficit, cold temperatures) generally reduce photosynthe
Externí odkaz:
https://doaj.org/article/60fbdee3dd6040ffb5ecf683c4f5e1aa
Autor:
Kevin A. Macdonald, John R. Roche
Publikováno v:
New Zealand Journal of Agricultural Research. :1-118
Autor:
C.V.C. Phyn, T.M. Grala, O.M. Jordan, John R Roche, Chris R. Burke, B. Kuhn-Sherlock, Susanne Meier
Publikováno v:
Journal of Dairy Science. 105:1754-1767
Peripartum metabolism and subsequent reproductive performance of dairy cows are linked, with maladaptation over the transition period associated with poor reproductive success. A herd of seasonal calving, grazing dairy cows was established that diffe
Autor:
DJ Donaghy, C.V.C. Phyn, John R Roche, S.J. Hendriks, K.R. Mueller, S. A. Turner, J.M. Huzzey
Publikováno v:
Journal of Dairy Science. 103:12140-12157
Until recently, animal behavior has been studied through close and extensive observation of individual animals and has relied on subjective assessments. Wearable technologies that allow the automation of dairy cow behavior recording currently dominat
Autor:
John R Roche, S.J. Hendriks, K.R. Mueller, C.V.C. Phyn, J.M. Huzzey, DJ Donaghy, S.-A. Turner, B. Kuhn-Sherlock
Publikováno v:
Journal of Dairy Science. 103:10530-10546
Hypocalcemia is a common metabolic disorder of transition dairy cows that is considered a gateway disease, increasing the risk of other health disorders and reducing cow performance. Clinical milk fever is associated with long periods of recumbency,
Autor:
M. A. Crookenden, Juan J. Loor, M. Vailati-Riboni, John R Roche, Murray D. Mitchell, Susanne Meier, Jane K. Kay, Axel Heiser
Publikováno v:
Journal of Dairy Science. 103:2662-2676
Precalving feeding level and body condition score (BCS) alter postcalving energy balance and oxidant status of dairy cows. We hypothesized that the reported benefits of a controlled restriction precalving depend on precalving BCS. The objective was t
Autor:
Martin J. Auldist, J.A.S. Lancaster, Kelli P. A. MacDonald, A.M. Bryant, O.K. Spaans, John R Roche, M. Neal, G.J. Doole
Publikováno v:
Journal of Dairy Science. 102:11523-11535
In theory, a late winter–early spring calving date in temperate grazing systems best matches pasture supply and herd demand, thereby minimizing the need for nonpasture feeds and maximizing profitability. We used a quantitative case study approach t
Autor:
Sarah Reed, Hassendrini N. Peiris, Yong Qin Koh, Olivia J. Holland, Fatema B. Almughlliq, Kanchan Vaswani, Buddhika J. Arachchige, Susanne Meier, Chris R. Burke, John R Roche, Murray D. Mitchell, M. A. Crookenden
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-12 (2019)
Scientific Reports
Scientific Reports
Disease susceptibility of dairy cows is greatest during the transition from pregnancy to lactation. Circulating exosomes may provide biomarkers to detect at-risk cows to enhance health and productivity. From 490 cows, animals at high- (n = 20) or low
Autor:
Jonathan E. Barnsley, Chanjief Chandrakumar, Carlos Gonzalez-Fischer, Paul E. Eme, Bridget E. P. Bourke, Nick W. Smith, Lakshmi A. Dave, Warren C. McNabb, Harry Clark, David J. Frame, John Lynch, John R. Roche
Publikováno v:
Sustainability. 14:7587
The authors would like to make the following corrections about the published paper [...]